Bug Description

CURRENT_TEST: rpl.rpl_concurrency_error
mysqltest: In included file "./include/rpl_diff.inc":
included from ./include/rpl_diff.inc at line 113:
At line 113: command "diff_files" failed with error 1. my_errno=175

More results from queries before failure can be found in /mnt/workspace/percona-server-5.5-param/BUILD_TYPE/release/Host/ubuntu-wily-64bit/mysql-test/var/4/log/rpl_concurrency_error.log

It appears that this is caused by diffing the result of the trigger log tables, where triggers run on the master and slave independently, and so may happen to get different timestamps for the same event. The timestamps should be replaced by logical ones, i.e. autoincrement id